A system, vehicle and method for detecting the state of a rail vehicle during track switching

Abstract

The present invention discloses a detection system and method for the track-changing state of a rail vehicle, comprising: a track-changing sensor disposed on the axle box of the rail vehicle, at least one track-changing sensor is correspondingly arranged for each track-changing locking member, and each track-changing sensor is used to detect the position state of the track-changing locking member corresponding thereto; a main control unit connected to the track-changing sensors on each axle, and one main control unit is correspondingly arranged for each axle; the main control unit is used to obtain the position state of the track-changing locking member detected by each track-changing sensor connected thereto, judge the track-changing state of the wheels on its corresponding axle, and transmit the track-changing state to the on-vehicle host; the on-vehicle host is connected to each main control unit, and is used to receive the information uploaded by each main control unit and control the rail vehicle according to the information. The present invention can accurately judge the state and fault information during the track-changing process of the rail vehicle, and realize the safe and stable operation of the rail vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicle states, and particularly to a rail vehicle gauge-changing state detection system, a vehicle and a method. Background Technique

[0002] The statements in this part only provide background technical information related to the present invention, and do not necessarily constitute prior art.

[0003] At present, the railway transportation around the world has maintained the status quo of multiple gauges, mainly including four major gauges, resulting in restrictions and obstacles for rail vehicles when operating across regions; therefore, gauge-changing rail vehicles have emerged as the times require.

[0004] The locking device is located on both sides of the wheels (4 sets of locking devices are provided on each wheel set), and the outer ring of the axle box bearing is locked using a T-shaped rod. The axle box bearing is axially fixedly relative to the wheel. When passing through the ground device, the ground unlocking rail pulls out the T-shaped rod to unlock the axle box bearing. Under the action of the ground guiding rail, the axle box bearing moves to a new position together with the wheel. Subsequently, the ground unlocking rail pushes the T-shaped rod to the locking position, and the axle box bearing is locked again, and the gauge change is completed. The left and right wheels change gauges simultaneously; during the axial movement of the wheels, the axle box bears the load and the wheels are free.

[0005] The gauge-changing process is automatically completed when the vehicle passes through a fixed gauge-changing facility at a speed not greater than a set speed (such as 15 km / h). The gauge-changing process needs to ensure the safe operation of the rail vehicle. To ensure the execution and safety of the rail vehicle during the gauge-changing process, the prior art has equipped the rail vehicle with a variety of technologies for realizing the dynamic monitoring of the gauge-changing process. For example: through the gauge-changing dynamic lateral stress monitoring technology, it is possible to objectively judge whether the gauge change is jammed in a very short time; through the online intelligent monitoring technology of the inner distance of the wheel set, the gauge-changing dynamic can be real-time feedback to judge the accuracy of the gauge change.

[0006] However, these current monitoring technologies all monitor the gauge-changing process of the rail vehicle, and do not monitor issues such as whether the gauge-changing action has started or ended and whether there are faults during the gauge-changing action process, and cannot effectively ensure the safe operation of the rail vehicle. Summary of the Invention

[0007] To solve the above problems, the present invention proposes a rail vehicle gauge-changing state detection system, a vehicle and a method. By real-time monitoring the state of the rail vehicle gauge-changing locking device, it can accurately judge whether the gauge-changing action has started, whether the gauge change is successful, and whether there are potential hazards after the gauge change, etc., to ensure the safety and reliability of the entire vehicle gauge-changing process.

[0008] According to the first aspect of the embodiments of the present invention, a rail vehicle gauge-changing state detection system is provided, including:

[0009] A track-changing sensor is provided on the axle box of a rail vehicle. At least one track-changing sensor is correspondingly provided for each track-changing locking member, and each track-changing sensor is used to detect the position state of the track-changing locking member corresponding to it.

[0010] A main control unit is connected to the track-changing sensors on each axle, and one main control unit is correspondingly provided for each axle; the main control unit is used to obtain the position states of the track-changing locking members detected by each track-changing sensor connected to it, judge the track-changing state of the wheels on its corresponding axle, and transmit the track-changing state to the on-vehicle host.

[0011] An on-vehicle host is connected to each main control unit, and is used to receive the information uploaded by each main control unit and control the rail vehicle according to the information.

[0012] As a further solution, in the non-track-changing mode, when the track-changing sensor detects a change in the position of the track-changing locking member, the main control unit determines that a malfunction has occurred and sends an alarm signal to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running.

[0013] As a further solution, in the track-changing mode, when the track-changing sensor detects that all the track-changing locking members on a certain axle are lifted simultaneously, it is determined that the track-changing starts; after the track-changing is successful, when all the track-changing locking members on this axle are locked simultaneously, it is determined that the track-changing of this axle ends.

[0014] As a further solution, if all the track-changing locking members on this axle are not lifted simultaneously, or any track-changing locking member is not lifted, it is determined that the track-changing is unsuccessful, and an alarm signal is sent to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running.

[0015] As a further solution, after the track-changing is successful, if any track-changing locking member on this axle is not locked, it is determined that there are potential hazards after the track-changing, and an alarm signal is sent to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running.

[0016] As a further solution, the track-changing sensor can detect the position change of the track-changing locking member. When the track-changing sensor detects that the track-changing locking member is in the first position where it is lifted, it outputs a signal indicating that the track-changing locking member is lifted to the main control unit; when the track-changing sensor detects that the track-changing locking member is in the second position where it is locked, it outputs a signal indicating that the track-changing locking member is locked to the main control unit; when the track-changing sensor detects that the track-changing locking member is in a position between the first position and the second position, the sensor does not output a signal.

[0017] As a further solution, the track-changing sensor is a dual-channel track-changing sensor, and the main control unit determines the trusted channel according to the data information output by the track-changing sensor.

[0018] As a further solution, the main control unit includes: a main control chip, a power supply module, a storage module, a front-end analog IC interface, and a TTL-to-RS485 interface / Ethernet communication interface connected to the main control chip; the front-end analog IC interface is connected to the track-changing sensor and is used to convert the analog signal of the track-changing sensor into a digital signal and transmit it to the main control chip for judgment; the TTL-to-RS485 interface / Ethernet communication interface is connected to the vehicle-mounted host and is used to transmit the judgment information of the main control chip to the vehicle-mounted host.

[0019] According to the second aspect of the embodiments of the present invention, there is provided a rail vehicle including the above-mentioned rail vehicle track-changing state detection system.

[0020] According to the third aspect of the embodiments of the present invention, there is provided a method for detecting the track-changing state of a rail vehicle, including:

[0021] Detecting the position state of each track-changing locking member on the same axle through a track-changing sensor. In the track-changing mode, when the track-changing sensor detects that all the track-changing locking members on a certain axle are lifted simultaneously, it is determined that the track-changing starts; if all the track-changing locking members on this axle are not lifted simultaneously, or any track-changing locking member is not lifted, it is determined that the track-changing is unsuccessful, and an alarm signal is sent to the vehicle-mounted host to trigger the vehicle-mounted host to control the vehicle to stop running;

[0022] After the track-changing is successful, when all the track-changing locking members on this axle are locked simultaneously, it is determined that the track-changing of this axle ends; if any track-changing locking member on this axle is not locked, it is determined that there is a hidden danger after the track-changing, and an alarm signal is sent to the vehicle-mounted host to trigger the vehicle-mounted host to control the vehicle to stop running.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) In the present invention, the lifting and locking states of each track-changing locking pin are detected through a track-changing sensor. By detecting whether all the track-changing locking pins of each axle are lifted or locked simultaneously, the real-time monitoring of the track-changing process of the rail vehicle is realized, and the state and fault information in the track-changing process of the rail vehicle can be accurately judged, so as to realize the safe and stable operation of the rail vehicle.

[0025] The advantages of the additional aspects of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the positional relationship between the track-changing sensor and the axle of the rail vehicle in the embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the rail vehicle track-changing state detection system in the embodiment of the present invention. Detailed implementation mode

[0028] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0029] It should be noted that the terms used herein are only for describing the specific implementation mode and are not intended to limit the exemplary implementation mode according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0030] In the case of no conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0031] Embodiment 1

[0032] In one or more embodiments, a detection system for the track-changing state of a rail vehicle is disclosed, in combination with Figure 1 and Figure 2 , specifically including:

[0033] (1) A track-changing sensor is arranged on the axle box of each axle of the rail vehicle. At least one track-changing sensor is correspondingly arranged for each track-changing locking part on each axle. Each track-changing sensor is used to detect the position state of the corresponding track-changing locking part.

[0034] In this embodiment, the track-changing sensor is dual-channel redundant. The main control unit will determine the trusted channel according to the output data information of the track-changing sensor to ensure that when a single channel of the track-changing sensor fails, it does not affect the normal operation and use. In this way, 2 track-changing sensors are installed on each axle box, and each track-changing sensor correspondingly detects the position state of a track-changing locking pin; a total of 4 track-changing sensors are installed on the left and right wheel sets of each axle of the vehicle, and a total of 16 track-changing sensors are installed on 4 axles of each carriage.

[0035] Of course, it is also possible to have two track-changing sensors corresponding to each track-changing locking pin position. The two track-changing sensors are redundant to each other. When one of the track-changing sensors fails, the other track-changing sensor is enabled to ensure that it does not affect the normal operation and use.

[0036] The track-changing sensor can select a position monitoring sensor such as an optoelectronic sensor to detect the position state of the track-changing locking pin. In this embodiment, the track-changing locking pin corresponds to three position states: a first position where it is lifted, a second position where it is locked, and an intermediate position between the first position and the second position.

[0037] Correspondingly calibrate the output signal of the track-changing sensor with the position of the track-changing locking pin, that is, when the track-changing locking part is in the first lifted position, output a signal indicating that the track-changing locking part is lifted to the main control unit; when the track-changing sensor detects that the track-changing locking part is in the second locked position, output a signal indicating that the track-changing locking part is locked to the main control unit; when the track-changing sensor detects that the track-changing locking part is in a position between the first position and the second position, the sensor does not output a signal.

[0038] (2) The main control unit is connected to the track-changing sensors on each axle, and one main control unit is correspondingly set for each axle; the main control unit is used to obtain the position state of the track-changing locking parts detected by each track-changing sensor connected to it, judge the track-changing state of the wheels on its corresponding axle, and transmit the track-changing state to the on-vehicle host.

[0039] In this embodiment, when the rail vehicle is in the non-track-changing mode, when the track-changing sensor detects a change in the position of the track-changing locking part, the main control unit judges that the track-changing locking pin has malfunctioned and sends an alarm signal to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running to avoid safety risks.

[0040] When the rail vehicle is in the track-changing mode, track-changing will be performed when each axle reaches the position of the ground track-changing device; by detecting the position state of each track-changing locking part on the same axle through the track-changing sensor, the entire track-changing process can be monitored. For example: when the track-changing sensor detects that all the track-changing locking parts on a certain axle are lifted simultaneously, it is determined that the track-changing starts; if all the track-changing locking parts on this axle are not lifted simultaneously (that is, the lifting time difference between any two track-changing locking pins is greater than the set threshold), or any track-changing locking part is not lifted, it is determined that the track-changing is unsuccessful, and an alarm signal is sent to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running.

[0041] After the track-changing is successful, when all the track-changing locking parts on this axle are locked simultaneously, it is determined that the track-changing of this axle is completed; if any track-changing locking part on this axle is not locked, it is determined that there are hidden dangers after the track-changing, and an alarm signal is sent to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running.

[0042] In this embodiment, combined with Figure 2, the master control unit includes: a master control chip, a power supply module, a storage module, a front-end analog IC interface, and a TTL-to-RS485 interface / Ethernet communication interface connected to the master control chip; wherein, the power supply module is used for power supply, and the storage module is used for storing data; the front-end analog IC interface is connected to the track-changing sensor through a cable, and is used for converting the analog signal of the track-changing sensor into a digital signal and transmitting it to the master control chip for judgment; the TTL-to-RS485 interface / Ethernet communication interface is connected to the vehicle-mounted host, and is used for transmitting the judgment information of the master control chip to the vehicle-mounted host.

[0043] (3) The vehicle-mounted host is connected to each master control unit, and is used for receiving the information uploaded by each master control unit and controlling the rail vehicle according to the information.

[0044] In this embodiment, the vehicle-mounted host is used to control the operation of the rail vehicle. By receiving the information uploaded by each monitoring unit, if the position status of the track-changing locking pins corresponding to each axle is the correct status during the track-changing process, it indicates that the track-changing is successful, and the vehicle is controlled to continue moving forward; if the status of any track-changing locking pin is abnormal, it means that there is a problem during the track-changing process, and the vehicle is controlled to notify the operation and check to determine the source of the problem to ensure the safe operation of the rail vehicle.

[0045] Embodiment Two

[0046] In one or more embodiments, a rail vehicle is disclosed, which specifically includes: the rail vehicle track-changing state detection system described in Embodiment One.

[0047] Embodiment Three

[0048] In one or more embodiments, a method for detecting the track-changing state of a rail vehicle is disclosed, which specifically includes:

[0049] Detect the position status of each track-changing locking part on the same axle through a track-changing sensor. During the track-changing mode, when the track-changing sensor detects that all the track-changing locking parts on a certain axle are lifted simultaneously, it is determined that the track-changing starts; if all the track-changing locking parts on this axle are not lifted simultaneously, or any track-changing locking part is not lifted, it is determined that the track-changing is not successful, and an alarm signal is sent to the vehicle-mounted host to trigger the vehicle-mounted host to control the vehicle to stop running;

[0050] After the track-changing is successful, when all the track-changing locking parts on this axle are locked simultaneously, it is determined that the track-changing of this axle ends; if any track-changing locking part on this axle is not locked, it is determined that there is a hidden danger after the track-changing, and an alarm signal is sent to the vehicle-mounted host to trigger the vehicle-mounted host to control the vehicle to stop running.

[0051] The specific implementation method of the above process has been described in Embodiment One, and will not be elaborated here.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or make equivalent replacements, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A detection system for the track-changing state of a rail vehicle, characterized in that, it includes: Track-changing sensors, which are arranged on the axle boxes of the rail vehicle. At least one track-changing sensor is correspondingly arranged for each track-changing locking part, and each track-changing sensor is used to detect the position state of the track-changing locking part corresponding to it; The main control unit is connected to the track-changing sensors on each axle, and one main control unit is correspondingly arranged for each axle; the main control unit is used to obtain the position state of the track-changing locking part detected by each track-changing sensor connected to it, judge the track-changing state of the wheels on its corresponding axle, and transmit the track-changing state to the on-vehicle host; In the non-track-changing mode, when the track-changing sensor detects a change in the position of the track-changing locking part, the main control unit judges that a malfunction has occurred and sends an alarm signal to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running; In the track-changing mode, if all the track-changing locking parts on this axle are not lifted simultaneously, or any track-changing locking part is not lifted, it is determined that the track change is unsuccessful, and an alarm signal is sent to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running; After the track change is successful, if any track-changing locking part on this axle is not locked, it is determined that there is a hidden danger after the track change, and an alarm signal is sent to the on-vehicle host to trigger the on-vehicle host to control the vehicle to stop running; The on-vehicle host is connected to each main control unit, and is used to receive the information uploaded by each main control unit and control the rail vehicle according to the information.

2. A detection system for the track-changing state of a rail vehicle according to claim 1, characterized in that, In the track-changing mode, when the track-changing sensor detects that all the track-changing locking parts on a certain axle are lifted simultaneously, it is determined that the track change starts; after the track change is successful, when all the track-changing locking parts on this axle are locked simultaneously, it is determined that the track change of this axle ends.

3. A detection system for the track-changing state of a rail vehicle according to claim 1, characterized in that, The track-changing sensor can detect the position change of the track-changing locking part. When the track-changing sensor detects that the track-changing locking part is in the first position where it is lifted, it outputs a signal indicating that the track-changing locking part is lifted to the main control unit; when the track-changing sensor detects that the track-changing locking part is in the second position where it is locked, it outputs a signal indicating that the track-changing locking part is locked to the main control unit; when the track-changing sensor detects that the track-changing locking part is in a position between the first position and the second position, the sensor does not output a signal.

4. A detection system for the track-changing state of a rail vehicle according to claim 1, characterized in that, The track-changing sensor is a dual-channel track-changing sensor, and the main control unit determines the reliable channel according to the data information output by the track-changing sensor.

5. A detection system for the track-changing state of a rail vehicle according to any one of claims 1-4, characterized in that, The master control unit includes: a master control chip, a power supply module, a storage module, a front-end analog IC interface, and a TTL to RS485 interface / Ethernet communication interface connected to the master control chip; the front-end analog IC interface is connected to a track-changing sensor, and is used to convert the analog signal of the track-changing sensor into a digital signal and transmit it to the master control chip for judgment; the TTL to RS485 interface / Ethernet communication interface is connected to a vehicle-mounted host, and is used to transmit the judgment information of the master control chip to the vehicle-mounted host.

6. A rail vehicle, characterized in that it includes the rail vehicle track-changing state detection system according to any one of claims 1-5.

7. A method for detecting the track-changing state of a rail vehicle, based on the rail vehicle track-changing state detection system according to claim 1, characterized in that it includes: detecting the position states of each track-changing locking part on the same axle through a track-changing sensor. During the track-changing mode, when the track-changing sensor detects that all the track-changing locking parts on a certain axle are lifted simultaneously, it is determined that the track-changing starts; if all the track-changing locking parts on this axle are not lifted simultaneously, or any track-changing locking part is not lifted, it is determined that the track-changing is unsuccessful, and an alarm signal is sent to the vehicle-mounted host to trigger the vehicle-mounted host to control the vehicle to stop running; after the track-changing is successful, when all the track-changing locking parts on this axle are locked simultaneously, it is determined that the track-changing of this axle ends; if any track-changing locking part on this axle is not locked, it is determined that there are potential hazards after the track-changing, and an alarm signal is sent to the vehicle-mounted host to trigger the vehicle-mounted host to control the vehicle to stop running.

Images